Set Features (Efh); Table 106 Set Features Command (Efh) - Hitachi 7K320 - Travelstar Mobile Hard Drive Specifications

14.35

Set Features (EFh)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 0

Table 106 Set Features Command (EFh)

The Set Feature command is to establish the following parameters which affect the execution of
certain features as shown in below table.
ABT will be set to 1 in the Error Register if the Feature register contains any undefined values.
After power on reset, the device is set to the following features as default.
Write cache
ECC bytes
Read look-ahead
Reverting to power on defaults
Device-initiated interface power state
transition
Software setting preservation
Output Parameters To The Device
Feature
02H
03H
05H
06H
07H
10H
41H
55H
66H
82H
85H
86H
90H
AAH
C1H
CCH
7 6 5 4 3 2 1 0
- - - - - - - -
V V V V V V V V
Note.1
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 0 1 1 1 1
3 2 1
0 ABT T0N
0 V 0
Destination code for this command
Enable write cache (Note.2)
Set transfer mode based on value in sector count register
Enable Advanced Power Management
Enable Power-Up in Standby feature set
Power-Up in Standby feature set device spin-up
Enable use of Serial ATA feature
Enable Free-fall Control feature set (Note 5)
Disable read look-ahead feature
Disable reverting to power on defaults
Disable write cache
Disable Advanced Power Management (Note.3)
Disable Power-UP in Standby feature set
Disable use of Serial ATA feature
Enable read look-ahead feature
Disable Free-fall Control feature set (Note 5)
Enable reverting to power on defaults
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Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
0 7 6
AM BSY RDY
N
0 0 V
: Enable
: 4 bytes
: Enable
: Disable
: Disable
: Enable
7K320 (SATA) OEM Specification
7 6 5 4 3 2 1 0
- - - - - - - -
...See Below...
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
...See Below...
Status Register
5 4 3 2
DF DSC DRQ COR IDX ERR
0 - - 0
1 0
0 V